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MAX7044

更新时间： 2023-12-20 18:45:56
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
10页 1476K
描述
300MHz至450MHz、高效率、基于晶振的+13dBm ASK发送器

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中文翻译

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MAX7044 数据手册

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EVALUATION KIT AVAILABLE  
MAX7044  
300MHz to 450MHz High-Efficiency,  
Crystal-Based +13dBm ASK Transmitter  
General Description  
Features  
The MAX7044 crystal-referenced phase-locked-loop  
(PLL) VHF/UHF transmitter is designed to transmit  
OOK/ASK data in the 300MHz to 450MHz frequency  
range. The MAX7044 supports data rates up to 100kbps,  
and provides output power up to +13dBm into a 50Ω load  
while only drawing 7.7mA at 2.7V.  
● +2.1V to +3.6V Single-Supply Operation  
● OOK/ASK Transmit Data Format  
● Up to 100kbps Data Rate  
● +13dBm Output Power into 50Ω Load  
● Low 7.7mA (typ) Operating Supply Current*  
● Uses Small, Low-Cost Crystal  
The crystal-based architecture of the MAX7044 eliminates  
many of the common problems with SAW-based transmitters  
by providing greater modulation depth, faster frequency  
settling, higher tolerance of the transmit frequency, and  
reduced temperature dependence. The MAX7044 also  
features a low supply voltage of +2.1V to +3.6V. These  
improvements enable better overall receiver performance  
when using the MAX7044 together with a superheterodyne  
receiver such as the MAX1470 or MAX1473.  
● Small 3mm x 3mm 8-Pin SOT23 Package  
● Fast-On Oscillator: 250μs Startup Time  
Applications  
● Remote Keyless Entry (RKE)  
● Tire-Pressure Monitoring (TPM)  
● Security Systems  
● Garage Door Openers  
● RF Remote Controls  
● Wireless Game Consoles  
● Wireless Computer Peripherals  
● Wireless Sensors  
A simple, single-input data interface and a buffered  
clock-out signal at 1/16th the crystal frequency make the  
MAX7044 compatible with almost any microcontroller or  
code-hopping generator.  
The MAX7044 is available in an 8-pin SOT23 package  
and is specified over the -40°C to +125°C automotive  
temperature range.  
Ordering Information  
PIN-  
PACKAGE  
TOP  
MARK  
PART  
TEMP RANGE  
MAX7044AKA+T -40°C to +125°C  
8 SOT23  
AEJW  
*At 50% duty cycle (315MHz, 2.7V supply, +13dBm output power).  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
T = Tape and reel.  
Typical Application Circuit  
Pin Configuration  
TOP VIEW  
f
XTAL  
3.0V  
3.0V  
1
2
8
7
XTAL2  
XTAL1  
+
XTAL1  
GND  
1
2
3
4
8
7
6
5
XTAL2  
220pF  
100nF  
680pF  
100nF  
V
GND  
DD  
V
DD  
MAX7044  
SOT23  
MAX7044  
3
4
6
5
PAGND  
PAOUT  
DATA  
DATA INPUT  
ANTENNA  
DATA  
PAGND  
PAOUT  
CLOCK  
CLKOUT  
OUTPUT  
CLKOUT  
(f  
=
CLKOUT  
f /16)  
XTAL  
19-3221; Rev 5; 4/17  
1234567...10

中文翻译

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